652561361 has 2 divisors, whose sum is σ = 652561362. Its totient is φ = 652561360.

The previous prime is 652561331. The next prime is 652561369. The reversal of 652561361 is 163165256.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 612315025 + 40246336 = 24745^2 + 6344^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-652561361 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (652561369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326280680 + 326280681.

It is an arithmetic number, because the mean of its divisors is an integer number (326280681).

Almost surely, 2^652561361 is an apocalyptic number.

It is an amenable number.

652561361 is a deficient number, since it is larger than the sum of its proper divisors (1).

652561361 is an equidigital number, since it uses as much as digits as its factorization.

652561361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 35.

The square root of 652561361 is about 25545.2806013166. The cubic root of 652561361 is about 867.3754351122.

The spelling of 652561361 in words is "six hundred fifty-two million, five hundred sixty-one thousand, three hundred sixty-one".